Micronaut Zeebe Cinema

Micronaut Zeebe Cinema is a showcase for the Camunda Cloud platform and the Micronaut Zeebe intergration by Novatec

Tech Stack

• Zeebe 1.4.x
• Micronaut 3.x
• Java 11

Techniques

• Zeebe Workers in Micronaut
• BPMN
  • Messages
  • Errors
  • Timer
  • Gateways

Process Model

How to run it

• setup a Camunda Cloud instance / zeebe engine
  • remote
    • generate a client configuration on your Camunda Cloud account (tab API)
    • add your camunda cloud cluster credentials to the src/main/resources/application.yml
  • local
    • start a local containerized zeebe/operate setup (see docker/docker-compose.yml)
• start the application
  • run ./gradlew run from your terminal or
  • use your IDE to start the ZeebeCinemaApp
• use a REST client to make a reservation and check it:
  • POST http://localhost:8089/reservation/movie/{movie}?seats=A1,A2&userId=max.mustermann
  • GET http://localhost:8089/reservation/offer/c2a3cb6b-45ab-4840-9b40-b33cdb9df3ae (we do a GET for convenience reasons because you can call the link directly from the browser)
• check the log output or Operate for the progress (maybe you need to refine log levels -> Zeebe is very noisy in DEBUG)
• in case alternative seats are offered
  • you can check your log for an offer link: To accept these seats, click the following link: ...
  • clicking the link triggers the message correlation, otherwise the process stops after 2min
• you can also check Operate to see incidents or running instances under http://localhost:8080 -> user/pw is demo/demo